Question about Jeep Grand Cherokee
Service engine soon lite
Posted by Anonymous on
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Posted on Jan 02, 2017
Ignition switch is a solid culprit. the contacts get worn out or even "stretched " due to "Forced" turning of the key. You know the part where you try to turn the key past the stop point.
Posted on Dec 16, 2008
you may have to drive it several days for the light to go off, or have the codes cleared. personally I would just drive it. if the computer tests it, and it passes the test, it will go off on its own.
Posted on Sep 21, 2009
SOURCE: codes po452 and po453
both codes point to the fuel tank evap pressure sensor. High and low input faults.
Try clearing the codes first and seeing if they come back
You may have a vacuum leak, cracked or open vacuum line or faulty sensor.
Posted on Dec 21, 2009
P0452 Evap.Emission System-Pressure Sensor Low Input
The evaporative emission control system prevents hydrocarbon vapors from escaping from the fuel tank into the atmosphere where they could form photochemical smog. Gasoline vapors are collected in the charcoal canister. The Fuel Tank Pressure Sensor (FTPS) is an integral part of the evaporative monitoring system. The PCM monitors the FTPS signal to detect vacuum decay and excess vacuum. The FTPS measures the difference between the air pressure inside the fuel tank and outside air pressure to check the purge control solenoid valve operation and for leak detection in the evaporative emission control system by monitoring pressure and vacuum levels in the fuel tank during the purge control solenoid valve operating cycles.
Posted on Feb 12, 2010
SOURCE: where is the evap canister
The canaster it self is located on the drivers side rear of the wheel near the bumper has three hoses connecting to it 1 goes to the rollover valve on the fuell tank 1 to the canister vent solenoid on the member over the spare tire and the other 1 to the canister purge solenoid located on the mid left side of the intake manifold . What codes do you get ?
Posted on Jan 28, 2011
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